diff --git a/.github/workflows/downstream_builds.yml b/.github/workflows/downstream_builds.yml
new file mode 100644
index 000000000..aac0a7b9e
--- /dev/null
+++ b/.github/workflows/downstream_builds.yml
@@ -0,0 +1,158 @@
+name: Downstream Builds
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+
+  test-action:
+    runs-on: ubuntu-latest
+    steps:
+    - name: simple print statement
+      run: |
+        echo "success"
+
+  # python-nightly-build:
+  #   runs-on: ubuntu-latest
+  #   if: startsWith(github.event.comment.body, '/run python-nightly')
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - name: Set up Python Nightly
+  #     run: |
+  #       sudo apt-get install sqlite3 libsqlite3-dev
+  #       pushd ..
+  #       export VENV_DIR=$PWD/python38
+  #       git clone https://github.com/python/cpython.git
+  #       pushd cpython
+  #       ./configure
+  #       make
+  #       ./python -m venv "$VENV_DIR"
+  #       popd
+  #       popd
+  #       echo ::add-path::$VENV_DIR/bin/
+  #   - name: Install project and dependencies
+  #     run: |
+  #       python -c 'import sys; print(sys.version)'
+  #       python -m pip install --upgrade pip
+  #       python -m pip install -e .
+  #       python -m pip install -r dev-requirements.txt
+  #       python ci/install_coverage_subprocess_pth.py
+  #   - name: Display Python version
+  #     run: python -c "import sys; print(sys.version)"
+  #   - name: Test with pytest
+  #     run: |
+  #       COVERAGE_PROCESS_START=$GITHUB_WORKSPACE/.coveragerc \
+  #         PYTHONPATH='.:tests' python -m pytest -r s
+  #       coverage combine --append
+  #       coverage xml -i
+  #   - name: Publish coverage results
+  #     uses: codecov/codecov-action@v1
+  #     with:
+  #       token: ${{ secrets.CODECOV_TOKEN }}
+  #       file: ./coverage.xml
+
+  # distributed-downstream-build:
+  #   runs-on: ubuntu-latest
+  #   if: "startsWith(github.event.comment.body, '/run distributed') || startsWith(github.event.comment.body, '/run downstream')"
+  #   env:
+  #     PROJECT: distributed
+  #     TEST_REQUIREMENTS: pytest pytest-timeout numpy pandas mock bokeh fsspec>=0.3.3
+  #     PROJECT_URL: https://github.com/dask/distributed.git
+  #     PYTEST_ADDOPTS: "--timeout-method=thread --timeout=300 -m \"not avoid_travis\" -k \"not test_dask_scheduler and not test_workspace_concurrency and not test_defaults and not test_service_hosts and not test_logging_file_config and not test_hostport and not test_workdir_simple and not test_two_workspaces_in_same_directory and not test_recompute_released_results and not test_connection_args and not test_listen_args  and not test_remote_access\""
+  #   strategy:
+  #     matrix:
+  #       python_version: [3.7]
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - name: Set up Python 3.7
+  #     uses: actions/setup-python@v1
+  #     with:
+  #       python-version: ${{ matrix.python_version }}
+  #   - name: Install project and dependencies
+  #     run: |
+  #       bash ./.github/scripts/install_downstream_project.sh
+  #   - name: Test the downstream project
+  #     run: |
+  #       bash ./.github/scripts/test_downstream_project.sh
+
+  # joblib-downstream-build:
+  #   runs-on: ubuntu-latest
+  #   if: "startsWith(github.event.comment.body, '/run joblib') || startsWith(github.event.comment.body, '/run downstream')"
+  #   env:
+  #     PROJECT: joblib
+  #     TEST_REQUIREMENTS: "threadpoolctl pytest numpy distributed"
+  #     PROJECT_URL: https://github.com/joblib/joblib.git
+  #   strategy:
+  #     matrix:
+  #       python_version: [3.7]
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - name: Set up Python 3.7
+  #     uses: actions/setup-python@v1
+  #     with:
+  #       python-version: ${{ matrix.python_version }}
+  #   - name: Install project and dependencies
+  #     run: |
+  #       bash ./.github/scripts/install_downstream_project.sh
+  #   - name: Vendor current cloudpickle inside joblib
+  #     run: |
+  #       pushd ../joblib/joblib/externals
+  #       source vendor_cloudpickle.sh ../../../cloudpickle
+  #       popd
+  #   - name: Test the downstream project
+  #     run: |
+  #       bash ./.github/scripts/test_downstream_project.sh
+
+  # loky-downstream-build:
+  #   runs-on: ubuntu-latest
+  #   if: "startsWith(github.event.comment.body, '/run loky') || startsWith(github.event.comment.body, '/run downstream')"
+  #   env:
+  #     PROJECT: loky
+  #     TEST_REQUIREMENTS: "pytest psutil"
+  #     PROJECT_URL: https://github.com/tomMoral/loky.git
+  #   strategy:
+  #     matrix:
+  #       python_version: [3.7]
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - name: Set up Python 3.7
+  #     uses: actions/setup-python@v1
+  #     with:
+  #       python-version: ${{ matrix.python_version }}
+  #   - name: Install project and dependencies
+  #     run: |
+  #       bash ./.github/scripts/install_downstream_project.sh
+  #   - name: Test the downstream project
+  #     run: |
+  #       bash ./.github/scripts/test_downstream_project.sh
+
+  # ray-downstream-build:
+  #   runs-on: ubuntu-latest
+  #   env:
+  #     PROJECT: ray
+  #   strategy:
+  #     matrix:
+  #       python_version: [3.7]
+  #   steps:
+  #   - uses: actions/checkout@v1
+  #   - name: Set up Python 3.7
+  #     uses: actions/setup-python@v1
+  #     with:
+  #       python-version: ${{ matrix.python_version }}
+  #   - name: Install project and dependencies
+  #     run: |
+  #       python -m pip install --upgrade -r dev-requirements.txt
+  #       python -m pip install setproctitle psutil ray==0.6.4
+  #       PROJECT_DIR=$(python -c "import os, ray; print(os.path.dirname(ray.__file__), flush=True)")
+  #       rm $PROJECT_DIR/cloudpickle/cloudpickle.py
+  #       cp cloudpickle/cloudpickle.py $PROJECT_DIR/cloudpickle/cloudpickle.py
+  #   - name: Test the downstream project
+  #     run: |
+  #       PROJECT_DIR="$(python -c "import os, ray; print(os.path.dirname(ray.__file__), flush=True)")"
+  #       COVERAGE_PROCESS_START="$TRAVIS_BUILD_DIR/.coveragerc" PYTHONPATH='.:tests' pytest -r s
+  #       pytest -vl $PROJECT_DIR/tests/test_basic.py::test_simple_serialization
+  #       pytest -vl $PROJECT_DIR/tests/test_basic.py::test_complex_serialization
+  #       pytest -vl $PROJECT_DIR/tests/test_basic.py::test_ray_recursive_objects
+  #       pytest -vl $PROJECT_DIR/tests/test_basic.py::test_serialization_final_fallback
+  #       pytest -vl $PROJECT_DIR/tests/test_recursion.py
diff --git a/.github/workflows/testing.yml b/.github/workflows/testing.yml
index 400be8094..0ee0bcc3f 100644
--- a/.github/workflows/testing.yml
+++ b/.github/workflows/testing.yml
@@ -81,148 +81,3 @@ jobs:
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         file: ./coverage.xml
-
-  python-nightly-build:
-    runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, '[ci python-nightly]')"
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python Nightly
-      run: |
-        sudo apt-get install sqlite3 libsqlite3-dev
-        pushd ..
-        export VENV_DIR=$PWD/python38
-        git clone https://github.com/python/cpython.git
-        pushd cpython
-        ./configure
-        make
-        ./python -m venv "$VENV_DIR"
-        popd
-        popd
-        echo ::add-path::$VENV_DIR/bin/
-    - name: Install project and dependencies
-      run: |
-        python -c 'import sys; print(sys.version)'
-        python -m pip install --upgrade pip
-        python -m pip install -e .
-        python -m pip install -r dev-requirements.txt
-        python ci/install_coverage_subprocess_pth.py
-    - name: Display Python version
-      run: python -c "import sys; print(sys.version)"
-    - name: Test with pytest
-      run: |
-        COVERAGE_PROCESS_START=$GITHUB_WORKSPACE/.coveragerc \
-          PYTHONPATH='.:tests' python -m pytest -r s
-        coverage combine --append
-        coverage xml -i
-    - name: Publish coverage results
-      uses: codecov/codecov-action@v1
-      with:
-        token: ${{ secrets.CODECOV_TOKEN }}
-        file: ./coverage.xml
-
-  distributed-downstream-build:
-    runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, '[ci distributed]') || contains(github.event.head_commit.message, '[ci downstream]')"
-    env:
-      PROJECT: distributed
-      TEST_REQUIREMENTS: pytest pytest-timeout numpy pandas mock bokeh fsspec>=0.3.3
-      PROJECT_URL: https://github.com/dask/distributed.git
-      PYTEST_ADDOPTS: "--timeout-method=thread --timeout=300 -m \"not avoid_travis\" -k \"not test_dask_scheduler and not test_workspace_concurrency and not test_defaults and not test_service_hosts and not test_logging_file_config and not test_hostport and not test_workdir_simple and not test_two_workspaces_in_same_directory and not test_recompute_released_results and not test_connection_args and not test_listen_args  and not test_remote_access\""
-    strategy:
-      matrix:
-        python_version: [3.7]
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python_version }}
-    - name: Install project and dependencies
-      run: |
-        bash ./.github/scripts/install_downstream_project.sh
-    - name: Test the downstream project
-      run: |
-        bash ./.github/scripts/test_downstream_project.sh
-
-  joblib-downstream-build:
-    runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, '[ci joblib]') || contains(github.event.head_commit.message, '[ci downstream]')"
-    env:
-      PROJECT: joblib
-      TEST_REQUIREMENTS: "threadpoolctl pytest numpy distributed"
-      PROJECT_URL: https://github.com/joblib/joblib.git
-    strategy:
-      matrix:
-        python_version: [3.7]
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python_version }}
-    - name: Install project and dependencies
-      run: |
-        bash ./.github/scripts/install_downstream_project.sh
-    - name: Vendor current cloudpickle inside joblib
-      run: |
-        pushd ../joblib/joblib/externals
-        source vendor_cloudpickle.sh ../../../cloudpickle
-        popd
-    - name: Test the downstream project
-      run: |
-        bash ./.github/scripts/test_downstream_project.sh
-
-  loky-downstream-build:
-    runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, '[ci loky]') || contains(github.event.head_commit.message, '[ci downstream]')"
-    env:
-      PROJECT: loky
-      TEST_REQUIREMENTS: "pytest psutil"
-      PROJECT_URL: https://github.com/tomMoral/loky.git
-    strategy:
-      matrix:
-        python_version: [3.7]
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python_version }}
-    - name: Install project and dependencies
-      run: |
-        bash ./.github/scripts/install_downstream_project.sh
-    - name: Test the downstream project
-      run: |
-        bash ./.github/scripts/test_downstream_project.sh
-
-  ray-downstream-build:
-    runs-on: ubuntu-latest
-    if: "contains(github.event.head_commit.message, '[ci ray]') || contains(github.event.head_commit.message, '[ci downstream]')"
-    env:
-      PROJECT: ray
-    strategy:
-      matrix:
-        python_version: [3.7]
-    steps:
-    - uses: actions/checkout@v1
-    - name: Set up Python 3.7
-      uses: actions/setup-python@v1
-      with:
-        python-version: ${{ matrix.python_version }}
-    - name: Install project and dependencies
-      run: |
-        python -m pip install --upgrade -r dev-requirements.txt
-        python -m pip install setproctitle psutil ray==0.6.4
-        PROJECT_DIR=$(python -c "import os, ray; print(os.path.dirname(ray.__file__), flush=True)")
-        rm $PROJECT_DIR/cloudpickle/cloudpickle.py
-        cp cloudpickle/cloudpickle.py $PROJECT_DIR/cloudpickle/cloudpickle.py
-    - name: Test the downstream project
-      run: |
-        PROJECT_DIR="$(python -c "import os, ray; print(os.path.dirname(ray.__file__), flush=True)")"
-        COVERAGE_PROCESS_START="$TRAVIS_BUILD_DIR/.coveragerc" PYTHONPATH='.:tests' pytest -r s
-        pytest -vl $PROJECT_DIR/tests/test_basic.py::test_simple_serialization
-        pytest -vl $PROJECT_DIR/tests/test_basic.py::test_complex_serialization
-        pytest -vl $PROJECT_DIR/tests/test_basic.py::test_ray_recursive_objects
-        pytest -vl $PROJECT_DIR/tests/test_basic.py::test_serialization_final_fallback
-        pytest -vl $PROJECT_DIR/tests/test_recursion.py